Memory economics
driver a named mechanism, not a conclusion
HBM bits cost ~2.5x the wafer area of commodity bits, so HBM growth is paid for out of commodity capacity and the aggregate output number conceals its own split.
The path
| node | effect |
|---|---|
| HBM4 | +0.35 |
| High-Bandwidth Memory (HBM3E / HBM4) | +0.35 |
| Conventional DRAM and NAND supply (HBM crowding-out) | +0.35 |
| Memory bandwidth (HBM-class) | +0.35 |
coverage
4 of 4 declared anchors resolve in the model. A driver is a named mechanism rather than a graded severity or a priced claim, so its effects are deliberately smaller than either.
Arguments about this mechanism
These name its subject — they are claims about this mechanism, and they are what the eligibility gates grade.
Arguments that run through it
These name a node on the path rather than the subject, so they pass through this mechanism without being about it. Shown separately and never graded as claims about it — hubs above the graph’s own 90th-percentile degree are excluded, or every argument touching NVIDIA would attach to every mechanism NVIDIA touches.